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Rapid City

$99+ Cheap flights from Seattle to Rapid City (SEA - RAP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — RAP
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheap flight deals from Seattle to Rapid City

Cheapest flights from Seattle to Rapid City
Explore the most affordable flight options available from Seattle to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:53 pm
SEA
-
RAP
1 stop13h 53m
Multiple Airlines
Thu 9/1012:36 pm
RAP
-
SEA
1 stop30h 09m
Multiple Airlines
Deal found 7/18$203
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:16 pm
SEA
-
RAP
1 stop13h 30m
Multiple Airlines
Sun 9/133:34 pm
RAP
-
SEA
1 stop27h 11m
Multiple Airlines
Deal found 7/19$219
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:53 pm
SEA
-
RAP
1 stop13h 53m
Multiple Airlines
Sun 9/133:34 pm
RAP
-
SEA
1 stop19h 26m
Multiple Airlines
Deal found 7/18$240
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:53 pm
SEA
-
RAP
1 stop16h 51m
Multiple Airlines
Thu 9/1012:36 pm
RAP
-
SEA
1 stop30h 09m
Multiple Airlines
Deal found 7/18$272
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:53 pm
SEA
-
RAP
1 stop16h 51m
Multiple Airlines
Sun 9/133:34 pm
RAP
-
SEA
1 stop19h 26m
Multiple Airlines
Deal found 7/18$308
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:00 am
SEA
-
RAP
1 stop6h 24m
United Airlines
Wed 9/911:22 am
RAP
-
SEA
1 stop5h 30m
United Airlines
Deal found 7/21$319

Find flight deals from Seattle to Rapid City

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Rapid City (RAP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$203
(Kiwi.com)

One-way from

$99
(Kiwi.com)

Popular in

April

Cheapest in

January

Average price

$601
Provider with most accurate pricing for Seattle/Tacoma Intl-Rapid City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Rapid City flights.
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From Seattle/Tacoma Intl to Rapid City
Search Deals
One-way flight from Seattle/Tacoma Intl to Rapid City
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Rapid City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
Use the filters below to find and compare flights from Seattle to Rapid City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Wed 9/2

11:03 am-5:06 pm

1 stop5h 03m

Rapid City

Wed 9/9

11:22 am-5:42 pm

1 stop7h 20m

$319

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Thu 9/3

8:40 am-4:06 pm

1 stop6h 26m

Rapid City

Wed 9/9

11:22 am-5:42 pm

1 stop7h 20m

$319

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Fri 9/4

6:05 am-3:49 pm

1 stop8h 44m

Rapid City

Thu 9/10

4:31 pm-11:55 pm

1 stop8h 24m

$344

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Tue 8/25

5:00 am-12:24 pm

1 stop6h 24m

Rapid City

Fri 9/4

5:58 pm-11:04 pm

1 stop6h 06m

$367
Quickest round-trip

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Fri 10/16

2:27 pm-8:52 pm

1 stop5h 25m

Rapid City

Mon 10/19

11:17 am-4:03 pm

1 stop5h 46m

$376

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Wed 9/9

10:35 am-10:02 am

2 stops22h 27m

Rapid City

Fri 9/18

4:31 pm-11:55 pm

1 stop8h 24m

$397

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Tue 8/11

6:30 am-5:53 pm

2 stops10h 23m

Rapid City

Tue 8/18

5:00 am-11:44 am

1 stop7h 44m

$404

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Sun 8/16

5:00 am-12:24 pm

1 stop6h 24m

Rapid City

Mon 8/24

10:26 am-9:51 pm

2 stops12h 25m

$465
Cheapest one-way

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Sat 9/5

8:53 pm-7:33 pm

2 stops45h 40m

$161

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Tue 9/1

11:59 pm-10:02 am

1 stop9h 03m

$238

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Seattle to Rapid City

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Rapid City in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Rapid City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Rapid City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Rapid City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Rapid City flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Rapid City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Rapid City

Have a flexible travel schedule? Discover the best time to fly to Rapid City from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Rapid City

How far ahead should I book a flight from Seattle to Rapid City?

The price you pay for your flight from Seattle to Rapid City may vary depending on when you book. For the best chance of a lower fare, look to book 39 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Rapid City?

Currently, January is the cheapest month in which you can book a flight from Seattle to Rapid City (average of $349). Flying from Seattle to Rapid City in April is currently the most expensive (average of $726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to Rapid City?

Airfare is below average for this route at the moment.

Seattle to Rapid City flights typically cost between $430 and $664 in September.
The cheapest round-trip price found within the last 5 days was $203 on Multiple Airlines (Sep 2-Sep 10).

Reviews of airlines servicing Rapid City

Get insights into the airlines that provide service to Rapid City. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Rapid City. Reviews last updated July 23, 2026.
Get a feel of what it's like to fly with Delta and United Airlines from Seattle to Rapid City by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.8

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,479 reviews
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.8

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
10,024 reviews
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.8

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Seattle to Rapid City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Seattle to Rapid City round-trip?

    According to our current data, Delta ($190), and United Airlines ($317) offers the cheapest pricing from Seattle to Rapid City. Delta is priced at 63% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Seattle to Rapid City that include hotel bookings?

    Yes. In addition to deals on Seattle to Rapid City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Rapid City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Rapid City.

  • Can I find deals for business class flights from Seattle to Rapid City?

    Yes. Cheapflights offers flight deals from Seattle to Rapid City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Rapid City?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Rapid City (average of $349). Flying from Seattle to Rapid City in April is currently the most expensive (average of $726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Rapid City?

Book flights to Rapid City if you plan to visit one of these locations
Keystone
Deadwood
Sturgis
Spearfish

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Seattle to Rapid City

Discover the top 2 airlines that operate flights from Seattle to Rapid City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$190Average$421FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$317Average$560FlexibilityNo cancel feeOn-time69%

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